Week 11

製作出一個利用Timer自動旋轉的茶壺

#include <GL/glut.h>
float angle=0;


void display()
{
    glEnable(GL_DEPTH_TEST);
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glRotatef(angle,0,1,0);
        glutSolidTeapot(0.3);
    glPopMatrix();
    glFlush();
}
void time(int t)
{
    glutTimerFunc(10 ,time,0);
    angle+=1;
    glutPostRedisplay();
}
int main (int argc,char **argv)
{
    glutInit(&argc,argv);
    glutCreateWindow("3D");
    glutDisplayFunc(display);
    glutTimerFunc(10,time,0);
    glutMainLoop();
}

#include <GL/glut.h> ///使用 GLUT 3D 外掛

#include <opencv/highgui.h> ///要使用 OpenCV的 高級High圖形介面GUI

#include <opencv/cv.h> ///為了 cvCvtColor()而加上 cv.h

float angle=0; ///

void display()

{

    glEnable(GL_DEPTH_TEST); 

    glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); 

    glPushMatrix(); 

        glRotatef(angle, 0,1,0);  

        glutSolidTeapot(0.3); 

    glPopMatrix();

    glFlush(); 

    angle+=0.1;  

}

void init()

{   IplImage * img = cvLoadImage("image.jpg"); 

    cvCvtColor(img, img, CV_BGR2RGB);

    glEnable(GL_TEXTURE_2D); 

    GLuint id; 

    glGenTextures(1, & id ); 

    glBindTexture(GL_TEXTURE_2D, id); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); 

    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); 

    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);

}  

int main(int argc, char**argv) 

{

    glutInit(&argc, argv); 

    glutCreateWindow("3D");

    glutDisplayFunc(display);

    glutIdleFunc(display);

    init();

    glutMainLoop();

}

#include <opencv/highgui.h> ///for cvLoadImage()
#include <opencv/cv.h> ///for cvCvtColor()
#include <GL/glut.h> ///3D glut
#include <stdio.h>
float angle=0; 
GLUquadric * quad;
void display()
{   glEnable(GL_DEPTH_TEST); ///要啟動 Detph Test 深度值的測試,3D顯示才正確
    glClear(GL_COLOR_BUFFER_BIT  | GL_DEPTH_BUFFER_BIT);
    glPushMatrix();
        glRotatef(90, 1,0,0);
        glRotatef(angle, 0,0,1);
        gluQuadricTexture(quad, 1);
        gluSphere(quad, 0.5, 30, 30);///glutSolidTeapot(0.3);
    glPopMatrix();
    glFlush();
    angle+=1;
}
GLuint id;
GLuint id2;
void mouse(int button,int state, int x,int y)
{
    if(state==GLUT_UP)glBindTexture(GL_TEXTURE_2D,id2);
    else if(state==GLUT_DOWN)glBindTexture(GL_TEXTURE_2D,id);
}

void myInit()
{
    quad = gluNewQuadric();
    IplImage * img = cvLoadImage("image.jpg"); ///OpenCV讀圖
    cvCvtColor(img,img, CV_BGR2RGB); ///OpenCV轉色彩 (需要cv.h)
    glEnable(GL_TEXTURE_2D); ///1. 開啟貼圖功能

    glGenTextures(1, &id); /// 產生貼圖ID
    glBindTexture(GL_TEXTURE_2D, id); ///綁定bind 貼圖ID
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); 
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖S, 就重覆貼圖
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); /// 貼圖參數, 放大時的內插, 用最近點
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); /// 貼圖參數, 縮小時的內插, 用最近點
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img->width, img->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img->imageData);

    IplImage * img2 = cvLoadImage("image2.jpg"); ///OpenCV讀圖
    cvCvtColor(img2,img2, CV_BGR2RGB); ///OpenCV轉色彩 (需要cv.h)
    glEnable(GL_TEXTURE_2D); ///1. 開啟貼圖功能

    glGenTextures(1, &id2); /// 產生Generate 貼圖ID
    glBindTexture(GL_TEXTURE_2D, id2); ///綁定bind 貼圖ID
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖T, 就重覆貼圖
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT); /// 貼圖參數, 超過包裝的範圖S, 就重覆貼圖
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_NEAREST); /// 貼圖參數, 放大時的內插, 用最近點
    glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_NEAREST); /// 貼圖參數, 縮小時的內插, 用最近點
    glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, img2->width, img2->height, 0, GL_RGB, GL_UNSIGNED_BYTE, img2->imageData);



}   
void timer(int t)
{/// 1000 msec   50fps:20msec
    glutTimerFunc(20, timer, 0);
    glutPostRedisplay();
}
int main(int argc, char**argv)
{   glutInit(&argc, argv);
    glutCreateWindow("3D");
    glutDisplayFunc(display); ///顯示
    //glutIdleFunc(display);
    glutTimerFunc(0, timer, 0);
    glutMouseFunc(mouse);
    myInit(); 
    glutMainLoop();
}